NCIt definition : Gamma-secretase subunit APH-1A (265 aa, 29 kDa) is encoded by the human APH1A gene.
This protein plays a role in the assembly of gamma-secretase complexes.;
NCIt note : There are at least 3 isoforms of gamma-secretase subunit APH-1A that result from alternative
splicing. The long isoform (isoform 1; APH1AL; L, Aph-alpha1) is encoded by 7 exons
and is considered the canonical isoform by UniProt. Two shorter isoforms, isoform
2 (APH1AS; S, Aph-alpha2) and isoform 3, are encoded by 6 exons. (UniProt and OMIM);